Warm-air furnace.



No. 742,14 'PAT'EN'TED 0GT.27,1903. P

' 0. L. BADGER.

WARM AIR FURNACE.

APPLICATION FILED JAN. 18, 1902.

NO MODEL. l 2 SHEETS-SHEET 2.

ISM

THE Moms PETERS m FHOTOMTHQ, wAsulNaTom Dv c.

no. 742,14. i UNITED STATES i ate'nte'd October 2'7, 190?);

PAT NT OFFICE.-

OLIVER L. BADGER, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE HEATING,VENTIL ATINGr AND FOUNDRY COMPANY, OF ELMGROVE, lVEST VIRGINIA, ACORPORATION OF WEST VIRGINIA.

WARM-AIR FURNACE.

srnornroa'rron forming part of Letters Patent No. 742,146, dated October27, 1903. Application filed January 13, 1902. Serial No. 89,437. (Nomodel.)

T at whom it may concern:

Be it known that I, OLIVER L. BADGER, a resident of Pittsburg, in thecounty of Allegheny and State of Pennsylvania, have invented a new anduseful Improvement in Warm-Air Furnaces; and I do hereby declare thefollowing to be a full, clear, and exact description thereof.

My invention relates to warm-air furnaces, and has special reference tothat class of furnaces such as are used for heating schoolhouses,churches, court houses, and other like large public buildings.

The main object of my invention is to do away with the back breeching inthese horizontal furnaces and to cheapen and simplify the cost andconstruction of these furnaces, as well as provide such a furnace whichwill generate large quantities ot'warm air; and a further object of myinvention is to'form such a furnace which will more effe'ctuallyconveythe heat produced by the combustion of the fuel to the exterior of thefurnace, and thereby more effectually utilize the fuel consumed.

My invention consists, generally stated, in the novelarrangement,'construction, and combination of parts, as hereinafter morespecifically set forth and described, and particularly pointed out inthe claims.

To enable others skilled in the art to which my invention appertains toconstruct and use my improved warm-air furnace, I will describe the samemore fully, referring to the accompanying drawings, in which- Figure 1is a longitudinal central section ofmy improved warm-air furnace. Fig. 2is a front or face view of the same and showing a portion of the frontwall removed. Fig. 3

is a crosssection of the furnace through the' plates for supporting thefront wall. Fig. 4 is a cross section of the furnace through theash-pan. Fig. 5 is a like View in front of the forward baffle-plate.Fig. 6 is a like view showing another form of draft-space in the rearbaffle-plate. Fig. 7 is a cross-section of a portion of one of theplates used in forming the side walls of the furnace. Fig. 8 is a likeview of another form of such plate. Fig. 9

with the fuel-door c thereon.

held together by a series of bolts passing through the same. Theseplates 1 are pro vided on their exterior faces 1 with a series of wideflanges 4, which project out at right angles from the exterior faces 1,while the interior faces 1 of said plates 1 are preferably corrugated,as shown at 5 in Fig. 7. The forward plate a is provided with the frontplate 12, formed as part thereof, on which is formed the fuel-chute'c,which extends through the front plate B of the furnace, so as to formthe space 1) around the same, and is provided A manhole d is formed inthe front wall B, which can be covered by the door d, as shown in Fig.1, and a draft-door e is placed on the wall B below the fuel-opening c,which covers the end of the opening 61', leading to the, ash-pan 6,formed below the plates 1, which rests upon the front wall E and withinwhich pan 6 is the grate 7. The plates 1 are curved inwardly, as at 8,to form the arched top 9 over the fire-box 10, which is above the grate7, and corrugated lining-plates l1,having perforations 11' there in,lead from the sides 9' of the plates 1 atan incline down to thegrate 7.In the rearofthe fire-box 10 is the extension 10, formed of likeplatesjoined together and providedwith flanges, as the body A, andhaving the deflecting or front baffle plate 12 therein, which extends upfrom the dead-plates 13, forming the bottom to the plates lin the rearof the ash-pan 6 and has the draft'space 13 formed above the same.Lining-plates 12', having perforations 12 therein, also lead from thefront of the baffle-plate 12 at an-incline down to the dead-plates 13,and vertical liningl lates 12" extend up from the .plates12in front ofthe battle-plate 12, so as to form a space 13" between the same toprotect said baffle-plate 12 from the heat. A rear deflecting or baffleplate 14 is formed back of the front baffle-plate 12, which acts to formthe space 15 between these plates 12 and 14, and leading from this space15 is the draft space or spaces 16, as shown in Fig. 6, formed under therear baffleplate 14. A clean-out door 17 is formed in the dead-plates 13opposite the space 16, and a damper 18 is secured in the space 19 on topof the rear baffle-plate 14, which is operated by means of a damperrod20, passing through the front plate 13 and connected by a bent rod 21 onthe damper 18. In the rear of the rear damper-plate 14 is the space 22,formed by said plate 14 and the rear wall 23 on the rear plate a of theside plates 1, and from the upper end of this wall 23 a smoke-flue 24leads through the wall or casing 25 to the stack or chimney. The wall orcasing 25, generally formed of brick, surrounds the furnace A, so as toform the chamber 26 for the accumulation of warm air radiated from thefurnace A, and from this chamber 26 hot-air pipes lead through the wallor casing 25 to the different rooms or apartments to be heated. Thefront plate B, carrying the doors 0', d, and e, is supportedindependentlyof the furnace-body A and is connected by bolts 29 to ametal frame 27, formed of a lintel or plate 27, secured under the topwall 25 of the casing 25, and posts or plates 28, extending down andsecured to the side walls 25" of the casing 25, while the fuel-chute cis provided with the fuel-door frame 0, rigidly bolted by the bolts Cthere to, and the ash-pan door-frame D, rigidly bolted by bolts Dthereto, so that said plate B can be easily and quickly removed whendesired.

The use and operation of my improved warm-air furnace are as follows:The fuel is fed into the fire-box 10 through the fuelchute 0 onto thegrate 7, and tire being applied to such fuel in the fire-box 10 willenable the products of combustion to pass therefrom through the saidfirebox 10 and strike the front baffle-plate 12, after which theseproducts Will pass through the draft-space 13 over the plate 12, downthrough the space 15, through the draft-space 16, under the rearbaifle-plate 14, up through the space 22, and out through the smoke-flue24 to the chimney or stack. The waste heat and products of combustiongenerated by the fuel in the firebox 10in thus passing through the saidfirebox to the stack or chimney will come in contact with the body A ofthe furnace A formed by the side plates 1 and in striking the interiorfaces 1" of said plates 1 will heat these plates so that the heattherefrom will be radiated through them and the flanges 4 on theexterior faces 1 thereof and cause hot air to be generated thereby,which Will accumulate in the chamber 26, formed by the furnace A andcasing 25, so that the same can be carried off therefrom by hot-airpipes communieating with such chamber 26 and leading to the differentrooms or apartments in the building to be heated.

By the arrangement of baffle-plates l2 and 14 at the rear of the furnaceA the heat is brought more effectually into contact with the side wallsor plates 1 of the'furnace-body A, while a number of such baffle-platescan be used, if desired, so that more heat is radiated by said bodyportion A, and the flanges 4 are also more effectually heated, whichadds very materially to the heat-radiating surface of the furnace. Inthe use of the inclined lining-plates 11 the mass of coked fuel can beshoved over against the sides 9 of the plates 1 from the grate 7 and newfuel added to this coked fuel over the grate 7, so that the heat willstrike all points on the interior faces 1 of the plates 1, and theseinclined lining-plates will tend to throw the ashes away from the sidewalls, as Well as admit air through the perforations 11 in the same tothe fuel in the fire-box 10 at a higher point than the grate 7.

In Fig. 7 the plates 1 are shown as having their interior faces 1corrugated, as at 5, and in Fig. 8 such plates are shown with a straightinterior face 30, while, if desired, the dead-plates 13 can be removedfrom the extension 10 and the baffle-plates 12 and 14 moved forward, sothat the front baffle-plate 12 occupies a position directly at the rearof the ash-pan 6 and grate 7. These and other various modifications inthe construction and design of the various parts may be resorted towithout departing from the spirit of the in vention or sacrificing anyof its advantages.

It will thus be seen that my im proved warmair furnace provides asimpler construction than the ordinary class of these furnaces and hasless joints for the space occupied or size of furnace and amount ofradiating-surface. It will also be evident that it provides moreradiating-surface for the same grate-surface and size of furnace thanthe ordinary furnace of this kind, as well as better draft on account ofthe air moving through the furnace with less friction, and a greatertemperature will be obtained to the radiating-surface on the rearportion of said furnace on account of the air being allowed to impingeagainst the sides in passing through the furnace. There is also lessliability of cracking joints by expansion and contraction on account ofthe front being separate and bolted to posts instead of to body portionof furnace, as in ordinary cases, and such furnace can be easilyrepaired, since the front can be taken down independent of the body offurnace and casing and room obtained to repair sides without tearing thewhole casing and furnace to pieces.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is-

1. A furnace-body composed of a series of sections, an extension on saidbody beyond the fire-box therein, a vertical front baflleplate withinsaid extension having a draftopening through the same, and a verticalrear baffle-plate Within said extension having draft-spaces at the sidesthereof.

2. A furnace-body composed of a series of sections, an extension on saidbody-beyond the fire-box therein, a vertical front baffleplate withinsaid extension having a draftspace beyond the top thereof, and avertical rear baffle-plate within said extension'having draft-spaces atthe sides thereof.

3. A furnace-body composed of a series of sections, an extension on saidbody beyond the fire-box therein, a vertical front baffleplate withinsaid extension having a draftspace beyond the top thereof, a verticalrear bafile plate within said extension having draft-spaces at the sidesthereof, and a damper engaging with and opening in the top of the rearbaffle-plate.

4. A furnace-body composed of a series of sections, each having one ormore flanges extending out from the exterior face thereof, an extensionon said body beyond the firebox therein, a vertical front baffle-platewithin said extension havinga draft-space beyond the same, and avertical rear baffle plate within said extension having draft-spaces atthe sides thereof.

5. A furnace-body composed of a series of sections each having one ormore flanges extending out from the exterior face thereof, an extensionon said body beyond the firebox, a vertical front baffle-plate withinsaid extension having a draft-space beyond the top thereof, and avertical rear baffle-plate Within said extension having draft-spaces atthe sides thereof. 6. A furnace-body composed of a series of sections,each having one or more flanges extending out from the exterior facethereof, an extension on said body beyond the fire-box therein, avertical front baffle-plate within said extension having a draft-spacebeyond the top thereof, a vertical rear baffle-plate within-saidextension having draft-spaces'at the sides thereof, and a damperengaging with and openingin the top of the rear baffleplate.

7. A furnace-body composed of a series of sections, each having one ormore flanges extending outfrom the exterior face thereof, an extensionon said body beyond the fire-box therein composed of a series ofsections, each having one or more flanges extending out from theexterior face thereof, a vertical front baffle-plate within saidextension having a draft-space beyond the same, and a ver tical rearbaffle-plate within said extension having draft-spaces at the sidesthereof.

8. A furnace-body composed of a series of sections, each having one ormore flanges extending out from the exterior face thereof, an extensionon said body beyond the fire-box therein composed of a series ofsections, each having one or more flanges extending out .from theexterior face thereof, a vertical front baffle-plate within saidextension having a draft-space beyond the top thereof, and a verticalrear baffle-plate within said extension havingdraft-spaces at the sidesthereof.

9. A furnace-body composed of a series of sections, each having one ormore flangesextending out from the exterior face thereof, an extensionon said body beyond the fire-box therein composed of a series ofsections each having one or more flanges extending out from the exteriorface thereof, a vertical front baffle-plate within said extension havinga draft-space beyond the top thereof, a vertical rear baffle-platewithin said extension having draft-spaces at the sides thereof, and adamper engaging with and opening in the top of the rear baftle plate.

10. The combination of a furnace-body composed of a series of sections,a casing around said body, a metal frame on said casing, and afront-wall plate adapted to be detachably supported by said frame andinde pendently of the body of the furnace.

11. The combination of a furnace -body composed of a series of sections,a casing around said body, plates on said casing, and a front-wall plateadapted to be detachably secured to said plates and be supportedindependently of the body of the furnace.

12. The combination of a furnace-body composed of a series of sections,a casing around said body and provided with an opening therein, a metalframe fitting around the said opening, and a front-wall plate adapted tofit over said opening and be supported by said frame independently ofthe furnacebody.

13. The combination of a furnace-body composed of a series of sections,a casing around said body and provided with an opening therein, platesaround said opening, and a front-wall plate adapted to fit overtsaidopening and be secured to said plates so as to be supportedindependently of the furnace-body.

14. The combination of a furnace-body formed of a series of sections,the front section of which being provided with a projecting portion onthe front wall thereof to form a fuelopening, and a front-wall plateadapted to fit v around said. projecting portion and be supportedindependently of the furnace-body, said front-wall plate andfront-section wall being adapted to form an air-space between them.-

15. The combination of a furnace-body formed of a series of sections,the front section of which being provided with aprojecting portion onthe front Wall thereof toform a fuelopening, a casing around said body,and a front-wall plate adapted to fit around said projecting portion andbe supported by said casing independently of the said body, saidfront-wall plate and front-section wall being adapted to form anair-space between them within the casing.

16. The combination of a furnace, formed of-a series of sections, thefront section of which being provided with a projecting portion on thefront Wall thereof to form a fuelopening, a casing around said body,plates on said casing, and afront-wall plate adapted to fit around saidprojecting portion and be secured to said plates so as to be independentof said body, said front-wall plate and frontsection wall being adaptedto form an airspace between them within the casing.

17. The combination of a furnace body formed of a series of sections,thefront section of which being provided with a projecting portion on thefront wall thereof to form a fuelopening, a casing around said body andprovided with an opening therein, and a frontwall plate adapted to fitaround said projecting portion and oversaid casing-opening, saidfront-wall plate being supported by said casing independently of thefurnace-body and form an ail-space between said plate and thefront-section wall within said casing.

18. The combination of a furnace body formed of a series of sections,the front section of which being provided with a projecting portion onthe front wall thereof to form a fuelopening, a casing around said bodyand provided with an opening therein, plates around said opening in thecasing, and a front-wall plate adapted to fit around said projectingportion and over said casing-opening, said front-wall plate beingsecured to said plates so as to be supported independently of thefurnace-body and being adapted to form an air-space between said plateand front-section wall within said casing.

19. A furnace-body composed of a series of sections having flangesextending out from the exterior surface thereof, an extension composedof a series of sections on said body beyond the fire-box and providedwith flanges extending out from the exterior surface thereof,baflie-plates within said extension, and a perforated lining extendingup in front of the front bafie-plate.

20. A furnace-body composed of a series of sections having flangesextending out from the exterior surface there'of,an extension composedof a series of sections on said body beyond the fire-box therein andprovided with flanges extending out from the exterior surface thereof,baffle-plates within said extension, and a perforated inclined liningextending up to and in front of the front baffle-plate.

21. A furnace-body composed of a series of sections having flangesextending-out from the exterior surface thereof,an extension composed ofa series of sections on said body beyond the fire-box therein andprovided with flanges extending out from the exterior surface thereof,baffle-plates within said extension, anda perforated lining extending upin front of the front baflle-plate and adapted to form a space betweenthe same.

22. A furnace-body composed of a series of sections having flangesextending out from the exterior surface thereof,an extension composed ofa series of sections on said body beyond the fire-box therein andprovided with flanges extending out from the exterior surface thereof,baffle-plates Within said extension, a perforated inclined liningextending to and in front of the front baffle-plate, and a lining abovesaid inclined lining extending up in front of the front baiile-plate andadapted to form a space between said lining and plate.

23. A furnace-body composed of a series of sections, each having one ormore flanges extending out from the exterior face thereof, an extensioncomposed of a series of sections on said body beyond the fire-boxtherein and provided with flanges extending out from the exteriorsurface thereof, baffle-plates within said extension, and a perforatedlining extending up in front of the front baffle-plate.

24:. A furnace-body composed of a series of sections, each having one ormore flanges extending out from the exterior face thereof, an extensioncomposed of a series of sections on said body beyond the fire-boxtherein and provided with flanges extending out from the exteriorsurface thereof, baffle-plates within said extension, and a perforatedinclined lining extending up to and in front of the front baffle-plate.

25. A furnace-body composed of a series of sections each having one ormore flanges extending out from the exterior face thereof, an extensioncomposed of a series of sections on said body beyond the fire-boxtherein and provided with flanges extending out from the exteriorsurface thereof, baflle-plates within said extension, and a perforatedlining extending up in front of the front baffle-plate and adapted toform a space between the same.

26. A furnace-body composed of a series of sections, each having one ormore flanges extending out from the exterior face thereof, an extensioncomposed of a series of sections 011 said body beyond the fire-boxtherein and provided With flanges extending out from the exteriorsurface thereof, baffle-plates within said extension, a perforatedinclined lining extending to and in front of the front baffleplate, anda lining above said inclined lining extending up in front of the frontbaflle-plate and adapted to form a space between said lining and plate.

In testimony whereof I, the said OLIVER L. BADGER, have hereunto set myhand.

OLIVER L. BADGER.

Witnesses:

J. L. TREFALLER, Jr., J. N. CooKn.

